When they say less is more, you have to wonder if they're talking about Mandolin Orange. The understated North Carolina duo draws an awful lot of beauty out of not much sound. Music that's quiet and pretty isn't new or novel, of course—but Mandolin Orange's 2015 album, Such Jubilee, is just so quiet and pretty, it feels like a new frontier in minimalist, melodic Americana. Instrumentally, Mandolin Orange's songs usually subsist on the gentle chop of something stringed, an elegant fiddle part, the gorgeous vocal harmonies of Emily Frantz and Andrew Marlin, and that's about it. At last year's Pickathon, Mandolin Orange's two cool-breeze sets were welcome respites from the scorching sun. Tonight, they return to town on a West Coast tour with Elephant Revival, another catchy folk act from the jam-band hotspot of Nederland, Colorado. BEN SALMON